CN211371406U

CN211371406U - Automobile direct-acting pressure flow-limiting valve

Info

Publication number: CN211371406U
Application number: CN201921829715.2U
Authority: CN
Inventors: 王助华
Original assignee: Ningguo Chihang Auto Parts Co ltd
Current assignee: Ningguo Chihang Auto Parts Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-08-28
Anticipated expiration: 2029-10-28

Abstract

The utility model relates to an automobile parts technical field just discloses a car direct action type pressure restriction valve, the water control valve comprises a valve body, the protection chamber has been seted up to valve body inner chamber middle part position, the fixed position intercommunication that the protection chamber left end is close to the bottom has the inlet port, the fixed position intercommunication that the protection chamber right-hand member is close to the bottom has the oil outlet, be equipped with the conveyer pipe that is located between inlet port and the oil outlet in the protection intracavity. This car direct-acting pressure current-limiting valve, when pressure is normal, the medium flows through the conveyer pipe from the oil outlet from the inlet port entering, flow out from the oil outlet, the current-limiting is not carried out, when the oil pressure is too big, the medium in the inlet port passes through oil pipe entering pressure intracavity, thereby the pressure strip in pressure intracavity receives the ascending of effort drive conveyer pipe and case, thereby the route completion current-limiting of cutting off the medium, because the conveyer pipe setting still can not produce great tolerance after long-time use in the bottom of case, the effect that the case does not receive long-time use influence has been realized.

Description

Automobile direct-acting pressure flow-limiting valve

Technical Field

The utility model relates to an automobile parts technical field specifically is a car direct action type pressure restriction valve.

Background

When an automobile is braked emergently, the automobile needs to be stopped in the shortest time, a driver generally strongly steps on a brake pedal, the stroke of the brake pedal is required to be short, the pedal feedback force is high, and therefore a direct-acting pressure limiting valve which is used for limiting the stroke of the brake pedal is needed.

The direct-acting pressure current-limiting valve used on the existing automobile mainly comprises a valve body, a valve core, an oil outlet, an oil inlet, a conveying pipe and other components, when the oil pressure rises, the valve core can drive the conveying pipe to move upwards, so that an oil way between the oil inlet and the oil outlet is cut off to complete current limiting, after the direct-acting pressure current-limiting valve is used for a long time, the conveying pipe is located inside the valve core, meanwhile, long-time friction can lead to large tolerance between the conveying pipe and the valve core, the current limiting effect can be influenced at the moment, and the use is influenced.

Meanwhile, the existing direct-acting pressure flow-limiting valve cannot completely cut off the continuous circulation of the medium after the flow-limiting valve is started, and the pipeline valve needs to be manually closed if the circulation of the fluid medium is completely blocked after a small-flow medium flows to the valve, so that the effect is poor.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, the utility model provides a car direct action type pressure current limiting valve possesses the case and does not receive long-time use influence and cut off the advantage of medium circulation completely, has solved the problem of proposing among the above-mentioned background art.

The utility model provides a following technical scheme: a direct-acting pressure flow-limiting valve for automobiles comprises a valve body, a protection cavity is arranged in the middle of the inner cavity of the valve body, the left end of the protection cavity close to the bottom end is fixedly communicated with an oil inlet, the right end of the protection cavity close to the bottom end is fixedly communicated with an oil outlet, the protective cavity is internally provided with a delivery pipe positioned between the oil inlet hole and the oil outlet hole, the central position of the inner cavity of the delivery pipe is fixedly provided with a baffle plate, the top end of the baffle plate is provided with a delivery cavity positioned in the inner cavity of the delivery pipe, and the bottom end of the clapboard is provided with a solid cavity positioned in the inner cavity of the conveying pipe, the bottom end of the conveying pipe is fixedly connected with a connecting rod, the protection intracavity is equipped with the pressure chamber that is located under the conveyer pipe, the bottom fixed mounting of connecting rod has the pressure chamber inside pressure chamber's pressure strip, the bottom fixed connection of pressure strip has the pressure spring who is located the pressure chamber inside.

Preferably, the valve core is movably clamped in the protection cavity, a connecting spring is fixedly mounted at the top end of the valve core, the top end of the connecting spring is fixedly connected with the cavity at the top end of the valve body, and the bottom end of the valve core is fixedly connected with the top end of the conveying pipe.

Preferably, the left side of the oil inlet penetrates through the left side wall of the valve body, the right side of the oil outlet penetrates through the right side wall of the valve body, and through holes with the same size as the conveying cavity are formed in the oil inlet and the oil outlet.

Preferably, the left end of the conveying pipe is tightly attached to the right end of the oil inlet hole, the right end of the conveying pipe is tightly attached to the left end of the oil outlet hole, and the conveying cavity is the same as the solid cavity in area.

Preferably, the middle position of the bottom end of the oil inlet is fixedly communicated with an oil pipe, an oil pipe valve is fixedly mounted on the oil pipe, and the right end of the oil pipe is fixedly communicated with the pressure cavity.

Preferably, a base is fixedly installed at the bottom end of the protection cavity, the pressure cavity is fixedly connected with the bottom end of the pressure spring and the top end of the base, the inner diameter of the bottom end of the pressure cavity is equal to the length of the pressing plate, and the inner diameter of the top of the pressure cavity is larger than the length of the pressing plate.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this car direct-acting type pressure current-limiting valve, through at case bottom installation conveyer pipe, when pressure is normal, the medium gets into from the inlet port and flows through the conveyer pipe and flow out from the oil outlet, the current-limiting is not carried out, when the oil pressure is too big, the medium in the inlet port passes through oil pipe entering pressure intracavity, thereby the pressure strip in pressure intracavity receives the ascending of effort drive conveyer pipe and case, thereby the route completion current-limiting of cutting off the medium, because the conveyer pipe setting still can not produce great tolerance after long-time use in the bottom of case, the case is not influenced, the effect that the case does not receive long-time use influence has been realized.

2. This car direct action type pressure current-limiting valve through set up a baffle in the conveyer pipe, and the baffle top sets up the transport chamber and has guaranteed that the medium flows through the conveyer pipe and realize the route, and has set up the entity chamber in the below of baffle, and when pressure was too big, the conveyer pipe can upwards displacement, and when the entity chamber contacted with inlet port and oil outlet, the route of the medium was cut off completely this moment, and the medium can't flow through the conveyer pipe, has realized the advantage of cutting off the medium circulation completely.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view of the interface structure of the delivery pipe of the present invention;

fig. 3 is an enlarged view of a structure at a in fig. 1.

In the figure: 1. a valve body; 2. a protection cavity; 3. a valve core; 4. an oil inlet hole; 5. an oil outlet hole; 6. a delivery pipe; 601. a partition plate; 602. a delivery lumen; 603. a solid cavity; 7. an oil pipe; 8. an oil pipe valve; 9. a connecting rod; 10. a pressure chamber; 11. a compression plate; 12. a pressure spring; 13. a base; 14. a spring is connected.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a direct-acting pressure flow-limiting valve for automobiles comprises a valve body 1, a protection chamber 2 is arranged at the middle position of an inner chamber of the valve body 1, an oil inlet 4 is fixedly communicated at a position close to the bottom end of the protection chamber 2, an oil outlet 5 is fixedly communicated at a position close to the bottom end of the protection chamber 2, a delivery pipe 6 positioned between the oil inlet 4 and the oil outlet 5 is arranged in the protection chamber 2, a partition plate 601 is fixedly arranged at the center position of the inner chamber of the delivery pipe 6, a delivery chamber 602 positioned in the inner chamber of the delivery pipe 6 is arranged at the top end of the partition plate 601, an entity chamber 603 positioned in the inner chamber of the delivery pipe 6 is arranged at the bottom end of the partition plate 601, a solid material insoluble in liquid is filled in the entity chamber 603, a connecting rod 9 is fixedly connected to the bottom end of the delivery pipe 6, a pressure, the bottom end of the pressure plate 11 is fixedly connected with a pressure spring 12 positioned inside the pressure chamber 10.

Further, the movable joint has case 3 in the protection chamber 2, and the top fixed mounting of case 3 has connecting spring 14, and connecting spring 14 is used for connecting case 3, prevents simultaneously that case 3 from dropping and has played the reset function of case 3, and connecting spring 14's top and 1 top inner chamber fixed connection of valve body, the bottom of case 3 and the top fixed connection of conveyer pipe 6.

Further, the left side of inlet port 4 runs through the left side wall of valve body 1, and the right side of oil outlet 5 runs through the right side wall of valve body 1, and all set up in inlet port 4 and the oil outlet 5 with carry the through-hole that the chamber 602 size is the same, the medium has and only can flow into the transport chamber 602 in the conveyer pipe 6 through the through-hole.

Further, the left end of the delivery pipe 6 is tightly attached to the right end of the oil inlet 4, the right end of the delivery pipe is tightly attached to the left end of the oil outlet 5, and the area of the delivery cavity 602 is the same as that of the solid cavity 603.

Furthermore, an oil pipe 7 is fixedly communicated with the middle position of the bottom end of the oil inlet hole 4, an oil pipe valve 8 is fixedly installed on the oil pipe 7, the oil pipe valve 8 is used for closing the oil pipe 7 when the flow limitation is not needed for a long time, so that the valve body 1 is in a non-flow-limiting state for a long time to protect the valve body 1, and the right end of the oil pipe 7 is fixedly communicated with the pressure cavity 10.

Further, a base 13 is fixedly installed at the bottom end of the protection cavity 2, the bottom ends of the pressure cavity 10 and the pressure spring 12 are fixedly connected with the top end of the base 13, the inner diameter of the bottom end of the pressure cavity 10 is the same as the length of the pressing plate 11, and the inner diameter of the top of the pressure cavity 10 is larger than the length of the pressing plate 11, so that the effect that the pressing plate 11 rapidly rises when the pressure is increased is achieved, and the requirement of a braking system is met.

The working principle is as follows: when the automobile direct-acting pressure flow-limiting valve is used, the valve body 1 is connected into an automobile brake-by-wire pipeline, when a medium for braking in an automobile flows in through the oil inlet hole 4, the medium forms a passage through the delivery pipe 6 and the oil outlet hole 5, at this time, the valve body 1 does not operate, when the emergency brake is carried out, the pressure of the medium is increased, the medium enters the pressure cavity 10 through the oil pipe 7 at the bottom end of the oil inlet 4, the pressure spring 12 at the bottom end of the pressure cavity 10 is subjected to pressure lengthening to drive the pressing plate 11 to move upwards, thereby driving the delivery pipe 6 to move upwards through the connecting rod 9, at the moment, the solid cavity 603 at the bottom end inside the delivery pipe 6 is contacted with the oil inlet 4 and the oil outlet 5, the passage is completely cut off, the flow limiting effect is achieved, since the supply pipe 6 is arranged at the bottom of the cartridge 3, after a long period of use, no large tolerances between the supply pipe 6 and the cartridge 3 occur, and the cartridge 3 is therefore not affected.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a car direct action formula pressure restriction valve, includes valve body (1), its characterized in that: protection chamber (2) have been seted up to valve body (1) inner chamber middle part position, the rigidity intercommunication that protection chamber (2) left end is close to the bottom has inlet port (4), the rigidity intercommunication that protection chamber (2) right-hand member is close to the bottom has oil outlet (5), be equipped with conveyer pipe (6) that are located between inlet port (4) and oil outlet (5) in protection chamber (2), conveyer pipe (6) inner chamber central point puts fixed mounting has baffle (601), transport chamber (602) that are located conveyer pipe (6) inner chamber are seted up on the top of baffle (601), and the bottom of baffle (601) set up entity chamber (603) that are located conveyer pipe (6) inner chamber, the bottom fixedly connected with connecting rod (9) of conveyer pipe (6), be equipped with pressure chamber (10) that are located under conveyer pipe (6) in protection chamber (2), the bottom fixed mounting of connecting rod (9) has pressure strip (11) that are located pressure chamber (10) inside And the bottom end of the pressing plate (11) is fixedly connected with a pressure spring (12) positioned in the pressure cavity (10).

2. The automotive direct-acting pressure limiting valve as claimed in claim 1, characterized in that: the valve core (3) is movably clamped in the protection cavity (2), a connecting spring (14) is fixedly mounted at the top end of the valve core (3), the top end of the connecting spring (14) is fixedly connected with an inner cavity at the top end of the valve body (1), and the bottom end of the valve core (3) is fixedly connected with the top end of the conveying pipe (6).

3. The automotive direct-acting pressure limiting valve as claimed in claim 1, characterized in that: the left side of inlet port (4) is run through the left side wall of valve body (1), the right side of oil outlet (5) is run through the right side wall of valve body (1), and all seted up in inlet port (4) and oil outlet (5) with carry the through-hole that chamber (602) size is the same.

4. The automotive direct-acting pressure limiting valve as claimed in claim 1, characterized in that: conveyer pipe (6) left end with the right-hand member of inlet port (4) closely laminates, and the right-hand member with the left end of oil outlet (5) closely laminates, carry chamber (602) with entity chamber (603) area is the same.

5. The automotive direct-acting pressure limiting valve as claimed in claim 1, characterized in that: the oil pipe (7) is fixedly communicated with the middle position of the bottom end of the oil inlet hole (4), an oil pipe valve (8) is fixedly mounted on the oil pipe (7), and the right end of the oil pipe (7) is fixedly communicated with the pressure cavity (10).

6. The automotive direct-acting pressure limiting valve as claimed in claim 1, characterized in that: the bottom end of the protection cavity (2) is fixedly provided with a base (13), the pressure cavity (10) is fixedly connected with the bottom end of the pressure spring (12) and the top end of the base (13), the inner diameter of the bottom end of the pressure cavity (10) is equal to the length of the pressing plate (11), and the inner diameter of the top of the pressure cavity (10) is larger than the length of the pressing plate (11).